ActionScript 3 Air Desktop Application Browse For Local Directory Popup

Hello all,

I am developing a desktop Air program that will include a browse button that allows the user to click, and once the user clicks the button, I am wanting a pop-up window to appear that allows the user to browse to a writable folder/directory on his computer. Once the user selects a folder in the window, I want to grab that directory location and store it. The storing part I know how to do, but how to create this pop-up window or dialog, I do not have a clue where to start.

What's the simplest way to go about this?

Edit:

I see I can use this example from this site, but I don't know where to grab the directory the user selected: actionscript 3 - How to create "Browse for folder" dialog in Adobe FLEX? - Stack Overflow

var f :File=newFile;
f.addEventListener(Event.SELECT, onFolderSelected);
f.browseForDirectory("Choose a directory");